/* Exported functions from alias.c
|
/* Exported functions from alias.c
|
Copyright (C) 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
|
Copyright (C) 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
|
|
|
This file is part of GCC.
|
This file is part of GCC.
|
|
|
GCC is free software; you can redistribute it and/or modify it under
|
GCC is free software; you can redistribute it and/or modify it under
|
the terms of the GNU General Public License as published by the Free
|
the terms of the GNU General Public License as published by the Free
|
Software Foundation; either version 3, or (at your option) any later
|
Software Foundation; either version 3, or (at your option) any later
|
version.
|
version.
|
|
|
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
for more details.
|
for more details.
|
|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with GCC; see the file COPYING3. If not see
|
along with GCC; see the file COPYING3. If not see
|
<http://www.gnu.org/licenses/>. */
|
<http://www.gnu.org/licenses/>. */
|
|
|
#ifndef GCC_ALIAS_H
|
#ifndef GCC_ALIAS_H
|
#define GCC_ALIAS_H
|
#define GCC_ALIAS_H
|
|
|
#include "coretypes.h"
|
#include "coretypes.h"
|
|
|
/* The type of an alias set. Code currently assumes that variables of
|
/* The type of an alias set. Code currently assumes that variables of
|
this type can take the values 0 (the alias set which aliases
|
this type can take the values 0 (the alias set which aliases
|
everything) and -1 (sometimes indicating that the alias set is
|
everything) and -1 (sometimes indicating that the alias set is
|
unknown, sometimes indicating a memory barrier) and -2 (indicating
|
unknown, sometimes indicating a memory barrier) and -2 (indicating
|
that the alias set should be set to a unique value but has not been
|
that the alias set should be set to a unique value but has not been
|
set yet). */
|
set yet). */
|
typedef int alias_set_type;
|
typedef int alias_set_type;
|
|
|
extern alias_set_type new_alias_set (void);
|
extern alias_set_type new_alias_set (void);
|
extern alias_set_type get_alias_set (tree);
|
extern alias_set_type get_alias_set (tree);
|
extern alias_set_type get_deref_alias_set (tree);
|
extern alias_set_type get_deref_alias_set (tree);
|
extern alias_set_type get_varargs_alias_set (void);
|
extern alias_set_type get_varargs_alias_set (void);
|
extern alias_set_type get_frame_alias_set (void);
|
extern alias_set_type get_frame_alias_set (void);
|
extern bool component_uses_parent_alias_set (const_tree);
|
extern bool component_uses_parent_alias_set (const_tree);
|
extern bool alias_set_subset_of (alias_set_type, alias_set_type);
|
extern bool alias_set_subset_of (alias_set_type, alias_set_type);
|
extern void record_alias_subset (alias_set_type, alias_set_type);
|
extern void record_alias_subset (alias_set_type, alias_set_type);
|
extern void record_component_aliases (tree);
|
extern void record_component_aliases (tree);
|
extern int alias_sets_conflict_p (alias_set_type, alias_set_type);
|
extern int alias_sets_conflict_p (alias_set_type, alias_set_type);
|
extern int alias_sets_must_conflict_p (alias_set_type, alias_set_type);
|
extern int alias_sets_must_conflict_p (alias_set_type, alias_set_type);
|
extern int objects_must_conflict_p (tree, tree);
|
extern int objects_must_conflict_p (tree, tree);
|
extern int nonoverlapping_memrefs_p (const_rtx, const_rtx);
|
extern int nonoverlapping_memrefs_p (const_rtx, const_rtx);
|
extern bool insn_alias_sets_conflict_p (rtx, rtx);
|
extern bool insn_alias_sets_conflict_p (rtx, rtx);
|
|
|
/* This alias set can be used to force a memory to conflict with all
|
/* This alias set can be used to force a memory to conflict with all
|
other memories, creating a barrier across which no memory reference
|
other memories, creating a barrier across which no memory reference
|
can move. Note that there are other legacy ways to create such
|
can move. Note that there are other legacy ways to create such
|
memory barriers, including an address of SCRATCH. */
|
memory barriers, including an address of SCRATCH. */
|
#define ALIAS_SET_MEMORY_BARRIER ((alias_set_type) -1)
|
#define ALIAS_SET_MEMORY_BARRIER ((alias_set_type) -1)
|
|
|
#endif /* GCC_ALIAS_H */
|
#endif /* GCC_ALIAS_H */
|
|
|
